Regionalized Urban-suburban Collector Road Safety Performance Functions FINAL REPORT March 14, 2019 By Eric T. Donnell, Vikash Gayah, Lingyu Li and Houjun Tang The Pennsylvania State University COMMONWEALTH OF PENNSYLVANIA DEPARTMENT OF TRANSPORTATION CONTRACT # 4400015622 WORK ORDER # PSU 007 Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient’s Catalog No. PA-2019-001-511601 WO 007 4. Title and Subtitle 5. Report Date March 14, 2019 Regionalized Urban-suburban Collector Road Safety Performance Functions 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. LTI 2019-03 Eric T. Donnell, Vikash V. Gayah, Lingyu Li and Houjun Tang 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) Thomas D. Larson Pennsylvania Transportation Institute Pennsylvania State University 11. Contract or Grant No. 201 Transportation Research Building University Park, PA 16802 4400015622, PSU WO 007 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered The Pennsylvania Department of Transportation June 14, 2018 - March 14, 2019 Bureau of Planning and Research Commonwealth Keystone Building 400 North Street, 6th Floor 14. Sponsoring Agency Code Harrisburg, PA 17120-0064 15. Supplementary Notes Jason Hershock, Manager, Safety Engineering and Risk Management, served as the project technical advisor. Robert Ranieri, Crash Information Systems and Analysis Manager, supplied the data used for the project. Heather Heslop (
[email protected]) was the research project manager. 16. Abstract The purpose of this project was to estimate regionalized safety performance functions (SPFs) for urban and suburban collector roads and at-grade intersections using roadway inventory and crash data from state-owned roadways in Pennsylvania.